Buinsk (Russian: Буи́нск; Tatar: Буа; Chuvash: Пӑва, Păva) is a town in the Republic of Tatarstan, Russia, located on the left bank of the Karla River (left tributary of the Sviyaga), 137 kilometers (85 mi) southwest of Kazan.

[citation needed] Town status was granted to it in 1780.

[2] Within the framework of administrative divisions, Buinsk serves as the administrative center of Buinsky District, even though it is not a part of it.

[1] As an administrative division, it is incorporated separately as the town of republic significance of Buinsk—an administrative unit with the status equal to that of the districts.

[1] As a municipal division, the town of republic significance of Buinsk is incorporated within Buinsky Municipal District as Buinsk Urban Settlement.